EP3318336A1 - Unité de redresseur de jet à filtre et unité de buses haute pression - Google Patents

Unité de redresseur de jet à filtre et unité de buses haute pression Download PDF

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Publication number
EP3318336A1
EP3318336A1 EP17198760.5A EP17198760A EP3318336A1 EP 3318336 A1 EP3318336 A1 EP 3318336A1 EP 17198760 A EP17198760 A EP 17198760A EP 3318336 A1 EP3318336 A1 EP 3318336A1
Authority
EP
European Patent Office
Prior art keywords
filter
jet
flow guide
inlet
guide surfaces
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP17198760.5A
Other languages
German (de)
English (en)
Other versions
EP3318336B1 (fr
Inventor
Siegfried Foshag
Tobias Huber
Alfonso Stein
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lechler GmbH
Original Assignee
Lechler GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lechler GmbH filed Critical Lechler GmbH
Priority to PL17198760T priority Critical patent/PL3318336T3/pl
Publication of EP3318336A1 publication Critical patent/EP3318336A1/fr
Application granted granted Critical
Publication of EP3318336B1 publication Critical patent/EP3318336B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/40—Filters located upstream of the spraying outlets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/31—Self-supporting filtering elements
    • B01D29/33—Self-supporting filtering elements arranged for inward flow filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
    • B05B1/04—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in flat form, e.g. fan-like, sheet-like
    • B05B1/042—Outlets having two planes of symmetry perpendicular to each other, one of them defining the plane of the jet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3402—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to avoid or to reduce turbulencies, e.g. comprising fluid flow straightening means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/007—At least a part of the apparatus, e.g. a container, being provided with means, e.g. wheels, for allowing its displacement relative to the ground
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
    • B05B1/04—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in flat form, e.g. fan-like, sheet-like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • B21B45/0233—Spray nozzles, Nozzle headers; Spray systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
    • B21B45/08—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing hydraulically

Definitions

  • the invention relates to a filter jet funnel unit, in particular for a high-pressure nozzle, in particular for descaling metal products, with a housing, the housing having an inlet filter, a connection end for connection to a nozzle, a flow channel between the inlet filter and the connection end and a jet straightener with flow guide surfaces having in the flow channel.
  • the invention also relates to a high-pressure nozzle unit with a filter jet unit according to the invention.
  • a high-pressure nozzle for descaling steel products comprising a housing having an inlet filter, a nozzle mouthpiece with an outlet opening, a flow channel between the inlet filter and the outlet opening in the nozzle mouthpiece and a jet funnel with flow guide surfaces in the flow channel.
  • the inlet filter is formed by a cylindrical piece of pipe which is provided with slots extending parallel to the central longitudinal axis of the pipe section.
  • the cylindrical tube piece is closed by an approximately hemispherical filter cap, which is also provided with slots.
  • a jet director Downstream of the inlet filter, a jet director is arranged, which has a plurality of, radially to a central longitudinal axis of the flow channel through the housing arranged flow guide surfaces. At their radially inner end, the flow guide surfaces are not connected to each other and thereby form a soulless beam judge.
  • the high-pressure nozzle has a housing with an inlet filter, a nozzle mouthpiece with an outlet opening, a flow channel between the inlet filter and the outlet opening in the nozzle mouthpiece and a jet funnel with flow guide surfaces in the flow channel.
  • the inlet filter is formed as a single-ended cylindrical tube, wherein in the peripheral wall of the cylindrical tube and in the disc-shaped end of the cylindrical tube slots are arranged. Downstream of the inlet filter, a jet straightener is arranged in the flow channel, which has a plurality of flow guide surfaces extending in the radial direction.
  • a streamline body is arranged, with which the flow guide surfaces are connected.
  • the streamline body has a conical tip at its upstream and downstream ends, respectively.
  • the cone-shaped tip arranged at the upstream end extends into the region of the inlet filter.
  • the cone-shaped tip disposed at the downstream end is arranged with its base located at the downstream end of the flow directors.
  • Another high pressure nozzle for the descaling of steel products is from the German utility model DE 91 09 175 U1 known.
  • a housing with an inlet filter, a nozzle mouthpiece with an outlet opening, a flow channel between the inlet filter and the outlet opening in the nozzle mouthpiece and a jet funnel with flow guide surfaces in the flow channel.
  • the jet director is located downstream of the inlet filter.
  • the Japanese Patent Abstract JP 2011-115749 A describes another high-pressure nozzle for descaling steel products.
  • the nozzle has a housing with an inlet filter, a nozzle mouthpiece with an outlet opening, a flow channel between the inlet filter and the outlet opening in the nozzle mouthpiece and a jet funnel with flow guide surfaces in the flow channel.
  • the jet straightener is subdivided into two sections, wherein the flow guide surfaces in the first and in the second section are offset from one another in the circumferential direction. Between the two sections, an annular space is arranged, in which no flow control surfaces are provided.
  • a flat jet nozzle is known with a nozzle mouthpiece with an outlet opening and an outlet chamber, wherein a jet straightener is arranged immediately upstream of the outlet chamber.
  • the jet straightener is designed as a disk and has a central passage opening and star-shaped arranged about the central passage opening about triangular or circular sector-shaped through holes.
  • the thickness of the radiator disc should be between 1 mm and 4 mm.
  • a filter jet unit and a high-pressure nozzle unit with respect to a flow resistance and a stability of the inlet filter to be improved.
  • a filter jet funnel unit in particular for a high-pressure nozzle, in particular for descaling metal products, is provided with a housing, wherein the housing has an inlet filter, a connection end for connection to a nozzle, a flow channel between the inlet filter and the connection end and a jet director with flow guide surfaces in FIG Flow channel, wherein the flow guide surfaces of the jet director are at least partially arranged in the region of the inlet filter.
  • the arrangement of the flow guide at least partially in the region of the inlet filter surprisingly causes a calming of the flow in the flow channel and thereby an improved impact of the high-pressure nozzle provided with the filter jet funnel unit, ie a higher energy of the spray jet when hitting a surface during operation of the nozzle. It is assumed that the at least partial arrangement of the flow guide surfaces in the region of the inlet filter ensures that turbulences in the region of the inlet filter can not arise at all or are degraded faster, as a result of which the flow resistance of the flow channel is reduced overall.
  • the high-pressure nozzles according to the invention are provided for spraying liquids with pressures of at least 50 bar, in particular several hundred bar, especially up to 800 bar.
  • the inlet filter has a plurality of inlet slots arranged parallel to the central longitudinal axis of the flow channel, wherein the inlet slots are separated from one another by a plurality of webs arranged side by side in the circumferential direction of the housing, the flow guide surfaces of the jet director being at least partially connected to the insides of the webs, which are facing an interior of the housing.
  • the flow control surfaces are at least partially connected to the inner sides of the webs, a significant stabilization of the webs and thus the entire inlet filter can be achieved.
  • pressure waves or pressure surges may occur, which are probably caused by the opening of the water supply.
  • Such pressure surges in the supply line reach the inlet filter and can the inlet filter damage, for example, by the webs between the slots of the inlet filter are pressed inwards into the flow channel. When this occurs, this reduces the free cross section of the inlet filter and the filter and jet straightener unit must be replaced.
  • the webs can be stabilized so far that no impressions in pressure surges is more to be feared.
  • the flow guide surfaces are connected at their radially inner side at least in sections with each other or with a central connecting element of the jet director.
  • the radially inner sides or edges of the flow guide can then be supported against each other or on the central connecting element, whereby a significant stabilization of the inlet filter is achieved.
  • the flow channels lying between the individual flow guide are separated from each other, whereby turbulence can be avoided and / or reduced faster and the flow resistance can be reduced.
  • the central connecting element extends only over part of the length of the jet director and the flow guide at the downstream end of the jet director do not touch on their radially inner sides. In this way, the free flow cross-section over the length of the jet director can be increased, since the free cross-section increases with the end or the end of the central connecting element.
  • the flow guide can still be continued and, for example, seen in the direction of flow taper to the end of the beam director.
  • the central connecting element is designed as a tube and forms a central inlet channel or partial flow channel of the jet director.
  • a further, separate flow channel can thereby be provided through the jet director or through a section of the jet director. This measure also contributes to a reduction of the flow resistance.
  • a free cross-section of the central partial flow channel, in particular of the tube decreases in the direction of flow.
  • the inner wall of the central partial flow passage, in particular of the tube extends at the downstream end of the jet director parallel to a central longitudinal axis of the housing.
  • the flow guide surfaces of the jet director extend over the entire length of the inlet filter.
  • each inlet slot on the cylindrical peripheral wall of the inlet filter is associated with a separate flow channel and all inlet slots in the filter cap, which closes the cylindrical portion of the inlet filter at the upstream end, a common flow channel is assigned.
  • the inlet filter has a plurality of inlet slots arranged on a cylindrical peripheral wall of the housing and, starting from these inlet slots, a plurality of separate inlet channels or a plurality of separate external partial flow channels are provided in the jet tube.
  • the partial flow channels may extend to the end of the jet director.
  • two inlet slots or each inlet slot are assigned a separate inlet channel or separate external partial flow channel.
  • a central inlet channel or central partial flow channel of the jet director and a plurality of outer inlet channels surrounding the central partial flow channel or outer partial flow channels are provided.
  • a filter cap of the inlet filter is arranged at the upstream end of the central inlet channel.
  • the filter cap has a plurality of inlet slots, wherein at least partially flow guiding surfaces of the jet director emanate from webs arranged between the inlet slots.
  • the inlet filter can be stabilized by means of the flow guide into the region of the filter cap.
  • the flow guide surfaces are connected to the inner sides of the webs.
  • an area of the flow guide faces is reduced in the flow direction and the flow guide faces at the downstream end of the jet director end at a common tip.
  • a common tip can form a streamline body, which is then formed by the converging flow guide.
  • the filter cap and the jet guide formed by the flow guide are formed integrally.
  • the filter cap and the jet straightener can be made in one piece by making a green compact by metal powder injection molding and then sintering.
  • several individual parts can be sintered together to produce a high strength, one-piece part.
  • the production of individual parts by die casting is possible, depending on the size and / or the material provided.
  • a cutting production is possible.
  • the presentation of the Fig. 1 shows a schematic sectional view of a high-pressure nozzle unit according to the invention 4.
  • the high-pressure nozzle unit 4 is installed in a weld nipple 12 which is intended to be inserted into an opening of a water-bearing pipe, not shown, and to be welded thereto.
  • the high-pressure nozzle unit 4 has a filter jet straightener unit 10 and a nozzle 6.
  • the nozzle 6 has a nozzle housing 8, a connecting sleeve 24, a mouthpiece 20 and an outlet opening 22.
  • a housing 14 of the filter jet straightener unit 10 is connected to the connecting sleeve 24 in the region 1 and the connecting sleeve 24 is connected to the mouthpiece 20 in the region 2.
  • the housing 14 is screwed into the nozzle housing 8, which is fastened by means of a union nut 16 to the weld nipple 12.
  • the housing 14 has an inlet filter 18 and a connection end 19, which abuts against the connection sleeve 24 and is optionally connected thereto. Between the inlet filter 18 and the connection end 19 and then further to the outlet opening 22 extends a flow channel 26.
  • a jet straightener 28 is arranged, which has a plurality of flow guide 30.
  • the flow guide surfaces 30 of the jet director 28 extend as Fig. 1 it can be seen over the entire length of the inlet filter 18 and still a bit beyond.
  • the length of the inlet filter 18 is formed by the downstream end of slots 32, which allow the entry of water into the flow channel 26.
  • the high-pressure nozzle unit 4 is provided for descaling metal products and is pressurized with water at a pressure between about 50 bar and 800 bar.
  • the presentation of the Fig. 2 shows a side view of the filter beam straightener unit 10 of the high-pressure nozzle unit 4 of Fig. 1 ,
  • the filter-jet straightener unit 10 has a cylindrical tube section 52 and an approximately hemispherical filter cap 54 attached to the cylindrical tube section.
  • the filter-jet funnel unit 10 has a plurality of inlet slots 56 in the cylindrical section, which extend parallel to a central longitudinal axis 58 of the inlet filter 18.
  • the entry slots 56 are also arranged in the radial direction to the central longitudinal axis 58 and extend a little way into the filter cap 54 inside. Alternatively, the entry slots 56 may terminate in front of the filter cap 54.
  • the filter cap 54 also has inlet slots 60, which run in the radial direction to the piercing point of the central longitudinal axis 58 through the filter cap 54.
  • the presentation of the Fig. 3 shows a view of the filter jet-straightener unit 10 from below against the flow direction provided in the operation, ie in Fig. 2 from the left.
  • the slots 60 in the filter cap and a total of six flow guide 50 can be seen.
  • the flow guide surfaces 50 are connected to the inside of webs 62, see Fig. 2 which lie between two entry slots 56. With their radially inner edges, the flow guide surfaces 50 are interconnected. All six flow guide surfaces 50 thus converge in the region of the central longitudinal axis 58 and are connected to one another there.
  • the presentation of the Fig. 4 shows the filter beam straightener unit 10 of Fig. 2 in a view from diagonally below. In this view, the flow guide surfaces 50 of the jet director can be easily seen, which are arranged within the filter jet-straightener unit 10.
  • Fig. 5 shows a further view of the filter beam straightener unit 10 obliquely from below and Fig. 6 shows a view on the cutting plane CC in Fig. 5 , In Fig. 6
  • the flow guide surfaces 50 are connected to the inside of the webs 62.
  • the flow guide surfaces 50 are formed integrally with the webs 62.
  • the jet funnels can be pressed with the flow guide into the filter.
  • the flow guide surfaces 50 are interconnected.
  • Fig. 8 Good to see that the webs 62 are stabilized by the flow guide 50. Specifically, a depression of the webs 62 is no longer to be feared when pressure surges occur in the water supplied. Because such radially inwardly acting forces on the webs 62 are taken from the flow guide 50 and derived.
  • each of these cross-sectionally approximately triangular part flow channels is associated with an entry slot 56 and an entry slot 60.
  • the number of entry slots 56 and the number of entry slots 60 may be different.
  • each partial flow channel is assigned an inlet slot 56 and each second partial flow channel is additionally assigned an inlet slot 60. Water that enters through the respective inlet slots 56 and 60 is consequently aligned within the associated partial flow channel between two adjacent flow guide surfaces 50 parallel to the central longitudinal axis and then leaves already in the aligned state the beam judge.
  • the individual water flows through the entry slots 56 and 60 thereby meet each other only in the aligned state.
  • the flow resistance of the inlet filter 18 compared to conventional inlet filters can be significantly reduced.
  • the Fig. 1 achieved with the filter-jet straightener unit 10, a higher impact of a spray over conventional high-pressure nozzles.
  • the Fig. 7 to 10 show various views of the filter beam unit 10 of the Fig. 2 , wherein the filter beam unit 10 in the representations of Fig. 7 to 10 cut open and only half shown.
  • the presentation of the Fig. 11 shows a filter Strahlrichtermati 68 for a further high-pressure nozzle unit according to the invention.
  • the filter jet-straightener unit 68 has a cylindrical section 70 and an approximately hemispherical filter cap 72 attached to the cylindrical section 70.
  • a plurality of inlet slots 74 are arranged distributed over the circumference, which extend parallel to a central longitudinal axis of the filter jet-straightener unit 68.
  • Also in the filter cap 72 a plurality of inlet slots 76 are arranged distributed over the circumference, which are arranged in alignment with the inlet slots 74 and run to a piercing point of the central longitudinal axis through the filter cap 72.
  • an alignment of the entry slots 74 and the entry slots 76 in the filter cap 72 is not required in the invention.
  • the number of entry slots 74 in the cylindrical tube section 70 may deviate from the number of entry slots 76 in the filter cap 72 and, for example, nine entry slots 76 may be provided in the filter cap 72 and twelve to fourteen entry slots 74 in the cylindrical tube section 70.
  • a jet straightener 78 is disposed within the cylindrical portion 70 of the filter jet straightener unit 68.
  • the jet straightener 78 has a central guide tube 80, which is arranged concentrically to the central longitudinal axis and which forms a central partial flow channel. With an outer side of the central guide tube 80 a plurality of flow guide 82 are connected. Between two flow guide surfaces 82, a separate partial flow channel is formed in each case.
  • the flow guide surfaces 82 are each connected to the inside of webs 62, wherein in each case a web 62 is arranged between two entry slots 74. Each entry slot 74 is thus assigned a separate partial flow channel between two flow guide surfaces 82.
  • the central guide tube 80 begins at the upstream end of the cylindrical section 70 and extends to the downstream
  • the wall of the central guide tube 80 begins at the upstream end of the cylindrical portion 70 on the inner wall of the cylindrical portion.
  • the free cross-section of the central guide tube 80 decreases. This taper occurs gradually, and in the sectional view of FIG Fig. 16 the wall of the central guide tube 80 is curved towards the central longitudinal axis.
  • the wall of the central guide tube 80 is then aligned parallel to the central longitudinal axis.
  • the guide tube 80 can also end with a tapering section.
  • the water that has passed through the filter cap 72 only mixes downstream of the flow guide surfaces 82 and downstream of the central guide tube 80 with the water that has entered through the entry slots 74 in the cylindrical section 70.
  • the filter cap 72 is due to their curved shape more stable than the webs 62, so that in this area is usually no deformation of the filter cap 72 to be feared in pressure surges.
  • FIG. 17 to 21 show various views of the cylindrical portion 70 of the inlet filter 68 of Fig. 11 to 16 , In these views, for example, the arrangement of the flow guide surfaces 82 in relation to the entry slots 74 can be seen more clearly as well as the formation of the central guide tube 80.
  • the cylindrical portion 70 is assembled with the filter cap 72 and then sintered, for example.
  • the filter cap 72 of the inlet filter 68 of Fig. 11 to 15 is in the FIGS. 23 to 27 shown from different angles.
  • the presentation of the Fig. 28 shows a schematic sectional view of a high-pressure nozzle unit 84 according to the invention according to another embodiment of the invention.
  • the high pressure nozzle unit 84 is re-installed in the weld nipple 12 and has the nozzle 6 and a filter jet straightener unit 88.
  • the high pressure nozzle unit 84 of Fig. 28 differs from the high-pressure nozzle unit 4 of Fig. 1 merely by the construction of the filter-jet-straightener unit 88, now with reference to the following FIGS. 29 to 38 is explained.
  • FIGS. 29 to 32 show the filter jet straightener unit 88 of the high pressure nozzle unit 84 of Fig. 28 .
  • the filter beam straightener unit 88 has the cylindrical portion 70, which compared to the embodiment of Fig. 17 to 21 is not changed and therefore will not be explained again.
  • the cylindrical portion 70 is assembled with a filter cap 90, which in turn is provided with a jet straightener and flow guide surfaces 92.
  • the filter cap 90 has a plurality of flow guide surfaces 92 which are arranged in radial planes to the central longitudinal axis.
  • the flow guide surfaces 92 are connected to the inside of webs 94 of the filter cap 90, wherein the webs 94 are each arranged between two inlet slots 96 of the filter cap 90.
  • the slots 96 are arranged in the same way as the slots 76 of the filter cap 72 in the Fig. 11 to 15 and 23 to 27 ,
  • the filter cap 90 of FIGS. 29 to 32 differs from the filter cap 72 only by the provision of the flow guide 92.
  • each of the inlet slots 96 is thereby assigned a separate partial flow channel which runs between two adjacent flow guide surfaces 92.
  • the partial flow channels each have a triangular cross-section.
  • the number of entry slots 96 may vary and need not be equal to the number of entry slots in section 70.
  • the flow guide surfaces 92 are connected to each other with their radially inner edges. As a result, on the one hand an extremely stable arrangement is achieved, on the other hand, the partial flow channels formed between the flow guide surfaces 92 are also strictly separated from each other.
  • the flow guide surfaces 92 reduce their area seen in the flow direction, in Fig. 33 So from top to bottom.
  • the shape of the flow guide surfaces 92 is chosen so that the filter cap 90 can be inserted into the central guide tube 80 of the cylindrical portion 70.
  • Up to the point X and thus approximately over the length of the first third of the central guide tube 80 are the flow guide 92 with its radially outer edge still on the inner wall of the central guide tube 80 at.
  • the point X is at most 80% of the length of the central guide tube 80.
  • the flow guide surfaces 92 taper so strongly that their radially outer edges are spaced from the wall of the central guide tube 80. This distance increases gradually until the end of the flow guide 92. As a result, only a gradual mixing of the water from the individual partial flow channels takes place between in each case two flow guide surfaces 92.
  • the flow guide surfaces 92 provide alignment of the water entering through the slots 96 in the filter cap 90, parallel to the central longitudinal axis of the inlet filter 88.
  • the water is at central guide tube 80 thereby aligned substantially parallel to the central longitudinal axis.
  • the water then strikes the water, which is likewise aligned parallel to the central longitudinal axis, in the partial flow channels between the flow guide surfaces 82. This reduces or avoids turbulence during the mixing of the flows and, overall, a lower resistance can be achieved with the filter jet funnel unit 88 than with conventional inlet filters and jet straighteners.
  • An impact of a spray jet exiting the high pressure nozzle unit 84 of the present invention is increased over conventional high pressure nozzles.
  • the flow guide surfaces 92 run out in a common tip 98.
  • the end of the tip 98 is located in front of the end of the central guide tube 80.
  • the tip 98 may also be rounded in the context of the invention and / or also be arranged in the longitudinal direction, at the level or after the end of the guide tube 80.
  • FIGS. 34 to 38 show the filter cap 90 of the inlet filter 88 of FIGS. 30 to 34 without the cylindrical portion 70.
  • the arrangement of the flow guide surfaces 92 is clearly visible.
  • each inlet slot 96 in the filter cap 90 is assigned a separate partial flow channel between two flow guide surfaces 92.
  • a plurality of inlet slots 96 may be associated with a partial flow channel.
  • the cylindrical portion 70 and the filter caps 72, 90 are each made separately by metal powder injection molding.
  • metal powder is first mixed in a known manner with a thermoplastic plastic binder.
  • a metal powder for example, hard metal powder can be used.
  • the mixture thus obtained is also referred to as a feedstock.
  • the mixture thus obtained is then shaped by means of injection molding and, in particular, the cylindrical section 70 and the filter cap 72, 90 are produced separately.
  • the precursor obtained after injection molding is referred to as green compact or green component.
  • thermoplastic binder is removed from the precursor by suitable processes. These can be, for example, thermal or chemical processes. After debindering, there is a precursor having a comparatively porous structure in which there are interstices between the individual metal powder particles which were originally filled by the thermoplastic binder.
  • suitable processes can be, for example, thermal or chemical processes.
  • debindering there is a precursor having a comparatively porous structure in which there are interstices between the individual metal powder particles which were originally filled by the thermoplastic binder.
  • the precursor obtained after debindering is also referred to as Browning or Brown Component.
  • the assembled state of the precursors they are then sintered.
  • the sintering is carried out by a heat treatment process. After sintering are the Material properties of the resulting end product comparable to those of solid materials.
  • the assembled items, especially the filter cap 72 or the filter cap 90 and the cylindrical portion 70 can be permanently connected together by the step of sintering and possibly existing joints between the items disappear.
  • the filter cap 72, the filter cap 90, and the cylindrical portion 70 may also be manufactured and sintered separately.
  • the connection of these components then takes place, for example, by welding, in particular laser welding or soldering.
  • the interconnected items can still be reworked or surface-treated, for example, brushed to further reduce the flow resistance.
  • the inlet filter produced by means of metal powder injection molding can be designed streamlined and simultaneously high strength.
  • the arrangement of the flow guide surfaces in the region of the inlet filter and the support of the webs between the inlet slots by the flow guide surfaces contribute to the increased strength compared to conventional inlet filters.
  • a reduced flow resistance can be achieved by early alignment of the water entering the inlet filter via the flow guide surfaces, since the flow guide surfaces of the jet director extend into the region of the inlet filter. As a result, this leads to an improved impact of a high-pressure nozzle equipped with the inlet filter according to the invention.
  • the filter-jet funnel unit according to the invention can be produced for example by means of die-casting or selective laser melting.
  • the presentation of the Fig. 39 shows a filter jet straightener unit 38, which instead of the filter beam straightener unit 18 in the high-pressure nozzle unit 4 of Fig. 1 can be used.
  • the filter jet straightener unit 38 has a cylindrical tube section 40 and an approximately dome-shaped filter cap 42. At the in Fig. 39 lower end of the cylindrical pipe section 40, the connection end for connection to the nozzle is arranged.
  • the filter cap 42 is provided with a plurality of inlet slots 44, which run approximately over the entire length of the filter cap 42 and end at the tip of the filter cap to a central tube 46. As a result, the slots 44 extend from the wall of the central tube 46 to the cylindrical wall of the cylinder section 40.
  • the slots 44 are separated from one another by webs 48.
  • the flow guide surfaces 34 are connected to the inner sides of the webs 48, see also Fig. 42 ,
  • the central tube 46 extends to just before the downstream end of the slots 44 and ends before the cylindrical portion 40 of the filter jet straightener unit 38 begins.
  • the flow guide surfaces 34 extend into the cylindrical portion 40 of the inlet filter 38, wherein the surface of the flow guide 34 but in the flow direction, in FIGS. 39 and 42 So from top to bottom, gradually reduced.
  • the flow guide surfaces 34 terminate prior to the end of the cylindrical portion 40.
  • the taper of the flow guide surfaces 34 and the consequent reduction in the area in the flow direction is achieved by a curved curved contour of the radially inward edge of the flow guide surfaces 34 in the portion downstream of the central tube 46.
  • the radially inner edges of the flow guide 34 thereby run apart steadily, and then finally open into the inner wall of the cylindrical portion 40.
  • the central tube 46 forms a partial flow channel and in each case a further partial flow channel of the inlet filter 38 is formed between in each case two flow guide surfaces 34.
  • Fig. 40 shows a view of the filter beam straightener unit 38 of Fig. 39 from above and Fig. 41 from underneath.
  • Fig. 42 shows a view on the cutting plane AA in Fig. 39 , Evident are the flow guide surfaces 34, each emanating from the inner sides of the webs 48. Between two webs 48, a slot 44 is arranged in each case. It can further be seen that the flow guide surfaces 34 run up to the central tube 46 and are connected with their radially inner edges with the outer wall of the central tube 46.
  • Fig. 43 shows a view on the cutting plane BB in Fig. 42 .
  • the flow guide surfaces 34 take on the inside of the webs 48, the full width of the webs 48 and then reduce their width toward the central tube 46.
  • Within the central tube 46 is also a partial flow channel formed by the water in the the central longitudinal axis of the inlet filter 38 immediately surrounding area can occur.
  • the presentation of the Fig. 44 shows a filter beam-directing unit 98 according to another embodiment of the invention.
  • the filter beam-straightener unit 98 has a total of three sections 100, 102, 104, which are manufactured as separate components and connected to each other, for example by sintering together, soldering or welding.
  • Each of the sections 100, 102, 104 includes portions of the inlet filter and portions of the jet director.
  • the upstream end portion 100 has a cylindrical shape planar end face and a plurality of radially arranged entry slots 106a.
  • the entry slots 106a extend parallel to the central longitudinal axis 126 along the cylindrical peripheral wall and also into the flat end face of the section 100. Between the entry slots 106a each webs 108a are arranged.
  • the location and configuration of the webs 108a is also in the sectional view of Fig. 45 on the cutting plane AA in Fig. 44 to recognize.
  • flow guide surfaces 110 exit.
  • the flow guide surfaces 110 merge in the middle of the portion 100 and there form a rod-shaped central element 112 as a result.
  • the rod-shaped central element 112 extends from the flat end face of the portion 100 and extends beyond the cylindrical peripheral wall.
  • the flow guide 110 tapers from the end of the cylindrical peripheral wall in the flow direction.
  • the flow guide surfaces 110 gradually reduce their area to zero, which is just before an end 114 of the central member 112 of the case.
  • the end 114 of the central component 112 is designed as a rounded tip.
  • the central member 112 and the flow guide surfaces 110 extend into the second section 102.
  • the second section 102 is also provided with entrance slots 106b distributed over its circumference.
  • the entry slots 106b in the second section 102 are aligned with the entry slots 106a of the first section 100 in the longitudinal direction of the filter beam unit 98, but they may also have a different number and / or offset in the context of the invention.
  • the second portion 102 is provided with a cylindrical peripheral wall in which the slots 106b are formed.
  • the second section 102 further includes a central tube 116, see Fig. 45 , which tapers in the flow direction and into which the central element 112 and the flow guide surfaces 110 of the first section 100 extend. From an outer wall of the central tube 116 go from the flow guide 118, which, similar to the embodiment of the FIGS. 14 and 16 to form several partial flow channels.
  • each inlet slot 106b in the second section 102 is associated with a partial flow channel between two flow guide surfaces 118.
  • the assignment of the inlet slots 106b to the partial flow channels may be different and, for example, two or three inlet slots 106b may be associated with a partial flow channel.
  • the central element 112 extends so far into the central tube 116 of the second portion 102, that the end 114 of the central element 112 is disposed approximately at the level of the end of the cylindrical peripheral wall of the second portion 102.
  • the central tube 116 extends beyond the end 114 of the central member 112 and beyond the end of the cylindrical peripheral wall of the second portion 102 and projects into a central tube 120 of the third portion 104.
  • the third portion 104 is similar in construction to the second portion 102 and only slightly longer.
  • the central tube 120 tapers in the direction of flow and then forms at its downstream end 122 the downstream end of the filter jet unit 98.
  • the third section 104 has a cylindrical peripheral wall in which a plurality of inlet slots 106c are arranged.
  • the entry slots 106c are aligned with the entry slots 106a, 106b of the first section 100 and the second section 102, wherein, as stated, the entry slots 106c of the third section 104 may be offset from the entry slots 1061, 106b of the sections 100, 102 or in FIG different number can be present.
  • the inlet slots 106a, 106b, 106c of the different sections 100, 102, 104 open into different partial flow channels.
  • the third section 104 between the webs 108c, which separate the inlet slots 106c from each other, and the outer wall of the central tube 120 flow guide surfaces 124 are arranged. In each case a partial flow channel is then arranged between two flow guide surfaces 124.
  • the third section is in principle constructed the same as the second section 102 and differs only in its length.
  • the filter beam-straightener unit 98 has a recognizable modular construction.
  • a filter beam director unit could be formed only by means of the first portion 100 and the second portion 102 or by means of the first portion 100 and the third portion 104.
  • the first section 100 with two consecutive sections 102 and then the third section 104, if a longer filter jet unit is required.
  • the central tube 116 of the second section 102 then opens again coaxially into the central tube 120 of the third section 104 and the subsequent section.
EP17198760.5A 2016-11-07 2017-10-27 Unité de redresseur de jet à filtre et unité de buses haute pression Active EP3318336B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL17198760T PL3318336T3 (pl) 2016-11-07 2017-10-27 Filtrowa jednostka prostownicy strumienia i wysokociśnieniowa jednostka dyszowa

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016221729.1A DE102016221729A1 (de) 2016-11-07 2016-11-07 Filter-Strahlrichtereinheit und Hochdruckdüseneinheit

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EP3318336A1 true EP3318336A1 (fr) 2018-05-09
EP3318336B1 EP3318336B1 (fr) 2020-07-15

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US (1) US11103889B2 (fr)
EP (1) EP3318336B1 (fr)
JP (2) JP6751066B2 (fr)
KR (2) KR102144561B1 (fr)
CN (1) CN108057528B (fr)
DE (1) DE102016221729A1 (fr)
ES (1) ES2814344T3 (fr)
PL (1) PL3318336T3 (fr)
RU (1) RU2666870C1 (fr)
UA (1) UA121132C2 (fr)

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CN110026303A (zh) * 2019-05-15 2019-07-19 国电青山热电有限公司 一种高压喷头及含有高压喷头的壁面清洗小车
CN114340804A (zh) * 2019-07-15 2022-04-12 喷雾系统公司 低漂移高效喷施系统
CN111151390A (zh) * 2020-01-22 2020-05-15 柯敏兴 一种液体出液形状控制装置
RU2764450C1 (ru) * 2020-11-20 2022-01-17 Публичное акционерное общество "Северсталь" (ПАО "Северсталь") Форсунка высокого давления и способ изготовления деталей для нее
CN116547080A (zh) * 2020-12-02 2023-08-04 Ddp特种电子材料美国有限责任公司 具有包括叶片的管状出射区的分配喷嘴
CN113217099B (zh) * 2021-06-08 2024-04-05 国能神东煤炭集团有限责任公司 水力定向顶板切割装置

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JP2018075632A (ja) 2018-05-17
DE102016221729A1 (de) 2018-05-09
JP2020146683A (ja) 2020-09-17
JP6751066B2 (ja) 2020-09-02
US11103889B2 (en) 2021-08-31
PL3318336T3 (pl) 2021-01-11
UA121132C2 (uk) 2020-04-10
RU2666870C1 (ru) 2018-09-12
ES2814344T3 (es) 2021-03-26
KR20180051417A (ko) 2018-05-16
CN108057528B (zh) 2021-08-03
KR20200079473A (ko) 2020-07-03
CN108057528A (zh) 2018-05-22
US20180126404A1 (en) 2018-05-10
EP3318336B1 (fr) 2020-07-15
KR102144561B1 (ko) 2020-08-13

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